NASA Urged to Develop In-Flight Shuttle Repair SystemBefore shuttle flights can resume, the Columbia Accident Investigation Board says NASA must develop a system for repairing damage to the craft while still in orbit. Engineers are developing ways to fix the leading edges of the shuttle's wings. Investigators believe damage to this area led to Columbia's breakup in February. NPR's Richard Harris reports.

Before shuttle flights can resume, the Columbia Accident Investigation Board says NASA must develop a system for repairing damage to the craft while still in orbit. Engineers are developing ways to fix the leading edges of the shuttle's wings. Investigators believe damage to this area led to Columbia's breakup in February. NPR's Richard Harris reports.